DC Circuit Breaker for Solar PV System— MCB, 2P, 1000V

DC Circuit Breaker for Solar PV System— MCB, 2P, 1000V - Image 2

DC Circuit Breaker for Solar PV System— MCB, 2P, 1000V - Image 3

DC Circuit Breaker for Solar PV System— MCB, 2P, 1000V - Image 4

DC Circuit Breaker for Solar PV System— MCB, 2P, 1000V

Price range: 950৳ through 1,150৳

Rated up to 1000V DC – ideal for solar PV systems
2-Pole (2P) design – protects both positive & negative lines
Reliable overload & short circuit protection
DC Circuit Breaker for Solar PV System
Brand: TOMZN, China.

Rating

Clear

SKU: STC-0404 Categories: Electrical Accessories, Circuit Breaker, MCB, Protection Device, Solar Accessories, Tomzn Brand: Tomzn

⚡ DC Circuit Breaker for Solar PV System— MCB, 2P, 1000V

The TOMZN TOB7Z-63 DC MCB is a high-performance miniature circuit breaker specifically designed for solar photovoltaic (PV) systems. It supports up to 1000V DC and provides reliable protection against overload and short circuits, ensuring the safety and longevity of your solar panels, inverters, and battery systems.

Whether you’re installing a residential rooftop solar system or a commercial solar setup, this DC MCB is an essential safety component.

STCMart is one of the most reliable and growing online suppliers of DC MCB for solar systems in Bangladesh, offering premium-quality electrical protection devices for modern photovoltaic (PV) installations. As solar energy adoption continues to rise across the country, the importance of proper circuit protection has become more critical than ever. STCMart is committed to ensuring that every solar system—whether residential, commercial, or industrial—operates safely, efficiently, and without risk of electrical damage.

A DC MCB (Direct Current Miniature Circuit Breaker) is an essential component in any solar power setup. Unlike conventional AC breakers, DC MCBs are specifically engineered to handle direct current, which behaves differently and can be more challenging to interrupt safely. STCMart supplies high-performance DC MCBs that provide reliable protection against overload, short circuits, and fault currents, helping to safeguard valuable solar equipment such as panels, inverters, charge controllers, and battery banks.

What makes STCMart stand out in the Bangladeshi market is its focus on quality, authenticity, and customer satisfaction. The platform offers a carefully selected range of DC MCBs from trusted brands like TOMZN, ensuring long-lasting durability and compliance with international safety standards. Each product is tested and designed to handle high voltage levels (up to 1000V DC), making them ideal for both small rooftop solar systems and large-scale commercial installations.

In addition to product quality, STCMart is known for offering competitive pricing, making it easier for customers to access reliable solar protection devices without exceeding their budget. The company understands the growing demand for cost-effective renewable energy solutions in Bangladesh and strives to provide the best price in the market without compromising on performance or safety.

Another key advantage of choosing STCMart is its nationwide delivery service. No matter where you are located in Bangladesh, you can easily order DC MCBs online and have them delivered quickly to your doorstep. This convenience is especially valuable for solar installers, engineers, and project developers who require fast and dependable supply chains for their ongoing projects.

STCMart also prioritizes customer support and technical guidance. Whether you are a professional electrician or a first-time solar user, the team is ready to assist you in selecting the right DC MCB based on your system requirements, including current rating, voltage capacity, and application type. This ensures that customers not only purchase the right product but also install it correctly for maximum safety and efficiency.

As Bangladesh moves toward a more sustainable and energy-efficient future, the demand for solar systems will continue to grow. STCMart is proud to play a vital role in this transition by supplying high-quality DC MCBs and other solar accessories that ensure safe and reliable operation. With its commitment to excellence, affordability, and customer satisfaction, STCMart has established itself as a trusted destination for solar electrical products in Bangladesh.

If you are looking for a dependable supplier of DC MCBs for your solar system, STCMart is the name you can trust—delivering quality products, expert support, and unbeatable value, all in one place.

💰 TOMZN TOB7Z-63 Price in Bangladesh

In the current Bangladeshi market, the price typically ranges:

✅ ৳1100 – ৳1,250 (depending on ampere rating & supplier)

👉 At STCMart, you can expect:

Competitive pricing
100% genuine product
Fast delivery across Bangladesh
Customer support & warranty assurance

⚙️ Key Features & Specifications

Attribute	TOMZN TOB7Z-63 DC MCB 1000V 2P Solar Breaker
Rated Voltage	Up to 1000V DC
Rated Current	3A – 63A
Poles	2P (Double Pole)
Breaking Capacity	6kA
Application	Solar PV, DC circuits
Mounting	DIN Rail
Protection	Overload & Short Circuit
Standard	IEC/EN compliant

🚀 Why Choose TOMZN TOB7Z-63 from STCMart?

✅ 1. Designed for Solar Safety

This DC MCB is specifically engineered for photovoltaic systems, unlike AC breakers which are not suitable for DC environments.

✅ 2. High Voltage Handling (1000V DC)

Perfect for modern solar systems with high string voltage.

✅ 3. Dual Pole Protection

Ensures both positive and negative lines are isolated, reducing electrical hazards.

✅ 4. Durable in Harsh Conditions

Works reliably even in extreme environments (“ice & fire” conditions)

✅ 5. Compact & Easy Installation

DIN rail mounting makes it quick and professional to install.

🔌 Applications

The TOMZN TOB7Z-63 is widely used in:

☀️ Solar PV systems (residential & commercial)
🔋 Battery storage systems
⚡ DC distribution boards
🔌 Off-grid & hybrid solar setups
📡 Telecom DC power systems

🛡️ Why DC MCB is Essential for Solar Systems?

Unlike AC, DC current does not naturally cross zero, making it harder to interrupt. That’s why a specialized DC breaker like TOMZN is required.

Without DC MCB:

❌ Risk of fire
❌ Damage to inverter & battery
❌ Unsafe maintenance

With TOMZN DC MCB:

✅ Instant fault isolation
✅ Equipment protection
✅ Safe system shutdown

📈 Benefits for Solar Users in Bangladesh

Protects against unstable voltage conditions
Ideal for increasing solar adoption in Bangladesh
Cost-effective safety solution
Compatible with most inverters and PV setups

🧠 Buying Guide (Important Tips)

Before purchasing, consider:

🔹 Ampere Rating Selection

Choose based on your system current:

Small system → 10A–20A
Medium → 25A–40A
Large → 50A–63A

🔹 Voltage Compatibility

Ensure your PV string voltage is within 1000V DC limit

🔹 Installation Quality

Always install by a professional electrician for safety

❓ FAQ (Frequently Asked Questions)

1. What is TOMZN TOB7Z-63 used for?

It is used to protect solar PV systems from overload and short circuits.

2. Is this suitable for all solar systems?

Yes, it supports 12V to 1000V DC systems, making it highly versatile

3. Can I use an AC MCB instead of DC MCB?

❌ No. AC MCB is unsafe for DC circuits due to different arc behavior.

4. What ampere should I choose?

Depends on your system current. Always select slightly higher than operating current.

5. Does it support both positive and negative lines?

✅ Yes, it’s a 2-pole breaker, isolating both lines.

6. Is it safe for outdoor solar installations?

Yes, but it should be installed inside a proper enclosure.

7. What is the breaking capacity?

It has 6kA breaking capacity ensuring reliable fault interruption

8. Is warranty available?

Typically 6 months warranty (depends on seller)

🏆 Final Verdict

If you’re looking for a budget-friendly yet reliable DC circuit breaker for solar systems in Bangladesh, the TOMZN TOB7Z-63 1000V DC MCB is a smart choice.

👉 With strong protection features, high voltage capacity, and affordable pricing, it delivers excellent value for both homeowners and solar professionals.